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87797-12-4

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87797-12-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87797-12-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,7,9 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 87797-12:
(7*8)+(6*7)+(5*7)+(4*9)+(3*7)+(2*1)+(1*2)=194
194 % 10 = 4
So 87797-12-4 is a valid CAS Registry Number.

87797-12-4Relevant articles and documents

A one-pot stereoselective synthesis of trans-1-aryl-2-aminotetralins from 2-arylethyl styrenes

Hajra, Saumen,Maji, Biswajit,Sinha, Debarshi,Bar, Sukanta

, p. 4057 - 4059 (2008)

An efficient stereoselective synthesis of trans-1-aryl-2-aminotetralins has been achieved via Cu(OTf)2 catalyzed one-pot aziridination and regioselective intramolecular arylation of in situ generated aziridines from 2-arylethyl styrenes and PhINSO2(4-NO2C6H4) [PhINNs]. Reaction of a mixture of E/Z-styrenes (≤85:15) provided trans-N-protected-1-aryl-2-aminotetralins with high diastereoselectivity (dr > 95:5), which are important synthons for many artificial pharmaceuticals.

Isomerization during olefin metathesis: An assessment of potential catalyst culprits

Higman, Carolyn S.,Plais, Lucie,Fogg, Deryn E.

, p. 3548 - 3551 (2014/01/06)

Two ruthenium hydride complexes commonly proposed as agents of unintended isomerization during olefin metathesis are examined for their activity in isomerization of estragole, a representative allylbenzene. Neither proves kinetically competent to account for the levels of isomerization observed during cross-metathesis of estragole by the second-generation Grubbs catalyst. A structure-activity analysis of selected ruthenium hydride complexes indicates that higher isomerization activity correlates with a more electrophilic metal center. It wasn't me: Two Ru hydrides thought to trigger double-bond migration during olefin metathesis are examined for their isomerization activity. Neither can account for the high levels of undesired isomerization seen during self-metathesis of estragole, a model allylbenzene substrate. Higher activity is found to correlate with a less electron-rich Ru center. Copyright

Highly selective dimerization of styrenes and linear co-dimerization of styrenes with ethylene catalyzed by a ruthenium complex

Kondo, Teruyuki,Takagi, Daisuke,Tsujita, Hiroshi,Ura, Yasuyuki,Wada, Kenji,Mitsudo, Take-Aki

, p. 5958 - 5961 (2008/09/18)

(Chemical Equation Presented) Heads you win: An unusual head-to-head dimerization of styrenes has been developed using the zero-valent ruthenium catalyst [Ru(η6-cot)(η2-dmfm)2] (cot = 1,3,5-cyclooctatriene, dmfm = dimethyl fumarate) in the presence of primary alcohols to give the homo-dimer in high regio- and stereoselectivity. The catalyst system is also effective for the selective co-dimerization of styrenes with ethylene to give the co-dimer in high yield.

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